FR2673096A1 - SUCTION CLEANING TOOL WITH ROLLER-BRUSH. - Google Patents

Abstract

The present invention relates to a vacuum cleaning tool, which is to be connected to a vacuum cleaner. The tool (1) has a suction opening (8) and a brush roller (4), arranged in the aforementioned opening and driven in rotation by an air turbine (18), driven by the air current sucked. To obtain a high torque on the brush roll, even for fluctuations in the suction air flow, it is planned to make the air turbine in the form of a radial impulse turbine, with a crown-shaped blade (16), between the blades of which are formed flow paths (27), limited in the axial direction, for the radial admission of the air flow sucked into an internal compartment (33), located in the center of the blade-shaped blade crown, and the radial exhaust of the flow of this compartment (33).

Description

The present invention relates to a vacuum cleaning tool.

  rant for a vacuum cleaner, with a suction opening and a brush roller, housed in the latter and driven in rotation by an air turbine, driven by the flow of aspirated air. In the vacuum cleaning of textile floor coverings and smooth floor surfaces, it is often the case that the dynamic energy of the air flow sucked in is not sufficient to detach adherent dirt particles from the surface to be cleaned A roller -brush, driven in rotation,

  is therefore provided in the suction opening, for cleaning

  yage of textile floor coverings, in particular On such coverings, the rotary brush roller also makes it possible to straighten the packed hairs, a better optical effect being

  thus obtained, apart from easier access to the parties

  dirt particles, deposited at the bottom of the pile of the carpet.

  The rotary brush roller is driven by an air turbine, driven by the flow of aspirated air which passes through the cleaning tool. The rotation of the turbine wheel is

  transmitted to the rotating brush roller, with a reduction

  simultaneous tion, by means of a belt The

  bage of the turbine wheel is closed per se, that is to say that adjacent vanes delimit a closed compartment, which is open only in the direction of aff aff Lux direction of the drawn air stream, but which is closed relative to the axis of rotation of the turbine The flow of aspirated air, deflected at the bottom of the blades, is animated by a L Lonnary movement in the turbine compartment The air flow, driving the wheel of turbine, therefore the torque and the speed of rotation of the brush roller, are very fluctuating, owing to the variable floor surfaces, such as smooth or textile floor coverings, with different heights and densities of

  hairs, alternative working movements, and a stranger-

  Frequent blockage of the air flow sucked in by fouling of the

dust filter.

  The invention aims to improve a vacuum cleaning tool

  rant, as defined above, so as to get a hit Le

  and a sufficiently high speed of rotation on the wheel

  brush water, even for fluctuations in aspirated air flow

  re. The invention is characterized in that the air turbine is a radial impulse turbine, with a crown-shaped blade, between the blades of which are made flow paths, limited in the axial direction, for the radial intake. of the air flow sucked into an internal compartment, located in the center of L'aubage in the shape of a crown, and for

  The radial exhaust of the f Lux from this compartment.

  The blading, open relative to the axis of rotation of the air turbine, creates flow paths, which allow

  a radial intake of the f Lux of air sucked into a compartment

  internally located in the center of the flow-shaped vane

  ronne The f Lux of air, directed on the turbine, thus penetrates

  first in the internal compartment, through the

  to come out of this compartment through the crown

  blades, through the aforementioned routes, in the compartment

  turbine flow The air flow sucked therefore crosses two

  times the crown of blades, without essential change of di-

t t

  forced rection Despite very limited space conditions

  tees, and without enlargement, this appearance of the nut without deviation allows to obtain a sufficiently high torque

  and / or a sufficiently high speed of rotation, to deta

  expensive particles of adherent impurities and / or straighten

  The hairs of a textile floor covering.

  In an advantageous form of construction of the invention, the air turbine wheel consists of a central wheel disc, the two axial front faces of which support a blade, the free ends of these blades, in the direction

  axial, being assembled by a closure ring.

  A preferential measure is that the internal compartment

  is closed in the axial direction by a closing plate.

  Finally, it is a good idea for the aspirated air flow to be directed onto the vane by an inlet duct fitted with a spout, in a direction roughly radial to the axis of rotation of the

turbine wheel.

  The invention will be better understood using the description

  below and of the construction example, reproduced in the appended drawings These correspond to: FIG. 1: a longitudinal section through a suction cleaning tool according to the invention,

  Figure 2: a partial top view of a cleaning tool

yage, in partial section.

  The suction cleaning tool 1, reproduced in the drawings, has a casing 6 with a central turbine compartment 7 The compartment 7 comprises an air turbine 18, whose axis of rotation 19 is located at the transverse of the axis longitudinal median 13 (FIG. 2) of the tool 1 Seen at the transverse of the axis 13, the air turbine 18 is located approximately t 4 J

  near the center of the housing 6 and / or compartment 7.

  Seen in the sense of the median axis Longitudina L, The compartment

  turbine impeller 7 is preceded by a brush compartment 3, produced in the front section 2 of the casing. Compartment 3 comprises a water brush brush 4, the axis of rotation of which is located at the transverse of the axis. Longitudina L 13 of L'outi L 1, and of which the brushes 5 penetrate through a suction opening 8, facing towards the so L 9 A The transverse of the median axis 13, The suction opening 8 extends over the entire width of the brush compartment 3

  and / or over the entire width of the cleaning tool 1.

  From the brush compartment 3, an inlet duct 15 opens into the turbine compartment 7 The duct 15 is roughly tangential to the wheel 17 of the air turbine 18; The outlet 14 of the inlet duct 15 being slightly inc linear with respect to the axis of rotation 19, the f lux of exhaust air is directed in a direction approximately radia L with respect to the axis of rotation 19 Figure 2 shows that the width of the inlet duct 15 corresponds to the

  Axia width Le of the turbine wheel 17.

  The suction cleaning tool L 1 is connected by a Lexib Le to a vacuum cleaner, by means of a connecting Lure tubing 11, not detailed. The Lure tubing 11 has a cylindrical articulated head 30, which is mounted with a possibility of rotation in the casing 6, around a pivot 12 transverse to the median axis Longitudina L 13, on the side of the turbine compartment 7, opposite to the brush compartment 3, in the rear zone 10 of the casing 6 La tubu Lure of connection 11 opens into the turbine compartment 7, and forms the exhaust duct for the f Lux of intake air This f Lux enters the brush compartment 3, at

  through the suction opening 8, passes into the compar-

  turbine core 7, via the inlet duct 15, and strikes the turbine wheel 17, directed by the nozzle 14 IL thus drives the turbine wheel 17, to escape from compartment 7, via the tubing Lure 11, towards the vacuum cleaner The air turbine 18 drives the rou Leau-brush 4, housed in the

  compartment 3, by means of a belt 20.

  An air opening adds Lle 31, the useful passage section of which can be regulated by a slider 32, in a non-detailed manner LLée, is provided in the upper face of the casing 6, adjacent to the front zone 2, to influence the

  f Lux of intake air admitted to the turbine compartment 7.

  When this opening 31 is open, a f Lux of secondary air

  daire enters compartment 7 for so L Liciter the turbine wheel 17, at the same time as the f Lux of air admitted by Le

inlet duct 15.

  To obtain a high driving power, the air turbine 18 is produced in the form of a "radia pulse turbine". The turbine wheel 17 consists of a wheel disc 23 at the center L, which keeps the turbine on L axis 19, with a possibility of rotation A blade 16, composed of crown-shaped vanes, concentric with respect to the axis of rotation 19, is provided on the two sides of the disc Latéra axia 34, 34 ' wheel 23 The external diameter DA of the crown of blades corresponds to the external diameter of the wheel disc 23; The internal diameter DI of the crown delimits an internal compartment 33 and / or 33 'On its front face The axia Le, opposite the wheel disc 23, each blade crown 16 is closed by a closing ring 24 and / or 24 ', which assembles The axia ends The of the different blades By ai L Their, a track Lement, delimited in the direction axia L by The wheel disc 23 and The closing ring 24 and / or 24', is thus formed between the front

  and the rear face 26 of adjacent blades.

  As shown in FIG. 2, in particular, the turbine wheel 17 has an embodiment symmetrical with respect to the wheel disc 23; The turbine wheel with the disc 23, the I blades 16 and the closing rings 24, 24 ', are of

  preferably made in one piece, in plastic no-

  so much. The flow of aspirated air, directed from the inlet duct 15 through the outlet 14, first enters the internal compartment 33 of the air turbine 18, through the external envelope 36 of the turbine wheel and the tracks flow 27 On the flow path between the outer casing 36 and the inner casing 37 of the crown of blades, the turbine wheel 37 is driven in the direction of f Lick 35 From the casing internal 37, the air flow escapes, via the flow paths 27, in the direction of the external envelope 36 of the ring 16, to return to the turbine compartment 7, the wheel 17 being again driven in the direction of arrow Lick 35 The flow of aspirated air escapes only then from the turbine compartment 7, through the tubing of

connection 11.

  The internal compartment 33 of the blade crown is preferably closed in the axial direction, the closure ring 24, 24 ′ being produced in the form of a closure plate. In addition, such a plate can be advantageously used.

  for supporting the turbine wheel on the axis of rotation

tion 19.

Claims (4)

Claims.   1 suction cleaning tool for a vacuum cleaner, with a suction opening (8) and a brush roller (4), disposed in the opening (8) and driven in rotation by an air turbine (18), driven by the flow of aspirated air, characterized in that the air turbine (18) is a radial impulse turbine with a paddle (16) in the form of a crown, between the blades of which flow paths (27) are formed , limited in the axial direction, for the radial admission of the air flow sucked into an internal compartment (33), located in the center of the blading (16) in the shape of a crown, and for the radial exhaust of the flow of this internal compartment (33).   2 suction cleaning tool according to claim 1, characterized in that the wheel (17) of the air turbine (18) consists of a central wheel disc (23), both of which   axial front faces (34, 34 ') support a blading (16).   3 suction cleaning tool according to claim 2, characterized in that the blades (16), supported by the   wheel disc (23), are assembled by a closing ring   ture (24, 24 ') on their free axial ends.   4 Suction cleaning tool according to any one of   Claims 1 to 3, characterized in that the compartment   internal (33) is closed in the axial direction by a plate closure (24, 24 ').   Suction cleaning tool according to any one of   claims 1 to 4, characterized in that the air flow   sucked is directed onto the blade (16), in a direction roughly radial with respect to the axis of rotation (19) of the turbine wheel (17), via an inlet duct (15) provided with a spout (14).